/* ─── Design Tokens ─────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #0a0a0a;
  --bg-subtle: #111111;
  --surface: #171717;
  --surface-hover: #1a1a1a;
  --surface2: #222222;
  --border: #262626;
  --border-focus: #404040;
  --text: #ededed;
  --text-secondary: #a3a3a3;
  --text-muted: #737373;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-subtle: rgba(59,130,246,0.1);
  --danger: #ef4444;
  --danger-hover: #f87171;
  --danger-subtle: rgba(239,68,68,0.1);
  --success: #22c55e;
  --success-subtle: rgba(34,197,94,0.1);
  --warning: #eab308;
  --warning-subtle: rgba(234,179,8,0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
  --mono: 'SF Mono', 'Monaco', 'Cascadia Code', 'Fira Code', monospace;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─────────────────────────────────────── */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }
::selection { background: var(--accent); color: #fff; }

/* ─── Navbar ────────────────────────────────────── */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(23,23,23,0.85);
}
.navbar .brand {
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}
.navbar .brand img { height: 22px; opacity: 0.9; }
.navbar .nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.navbar .nav-sep {
  width: 1px;
  height: 20px;
  background: var(--border);
}
.navbar .user-info {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}
.navbar .btn-logout {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font);
  transition: all var(--transition);
}
.navbar .btn-logout:hover { border-color: var(--danger); color: var(--danger); background: var(--danger-subtle); }

/* ─── Layout ────────────────────────────────────── */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 32px;
}

/* ─── Login Page ────────────────────────────────── */
.center-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(59,130,246,0.06) 0%, transparent 60%);
}
.login-card {
  text-align: center;
  padding: 56px 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  max-width: 420px;
  width: 100%;
}
.logo {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.03em;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.logo img { height: 36px; opacity: 0.9; }
.subtitle {
  color: var(--text-muted);
  margin-bottom: 36px;
  font-size: 14px;
}
.btn-google {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: #1a1a1a;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  font-family: var(--font);
  transition: all var(--transition);
  border: 1px solid transparent;
}
.btn-google:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255,255,255,0.1);
}

/* ─── Cards ─────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  transition: border-color var(--transition);
}
.card:hover { border-color: var(--border-focus); }
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.card-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ─── Buttons ───────────────────────────────────── */
.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn:hover { background: var(--accent-hover); transform: translateY(-0.5px); }
.btn:active { transform: translateY(0); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-danger { background: var(--danger-subtle); color: var(--danger); border: 1px solid transparent; }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.btn-ghost:hover { border-color: var(--border-focus); color: var(--text); background: var(--surface-hover); }

/* ─── Inputs ────────────────────────────────────── */
input[type="text"], input[type="password"], select, textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font);
  width: 100%;
  outline: none;
  transition: all var(--transition);
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-subtle); }
input::placeholder { color: var(--text-muted); }
input[type="checkbox"] { accent-color: var(--accent); }

/* ─── Tables ────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
th {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
td {
  font-size: 13px;
  color: var(--text-secondary);
}
tr:last-child td { border-bottom: none; }
tr:hover { background: var(--surface-hover); }

/* ─── Badges ────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-admin { background: var(--accent-subtle); color: var(--accent); }
.badge-user { background: rgba(115,115,115,0.15); color: var(--text-muted); }
.badge-active { background: var(--success-subtle); color: var(--success); }
.badge-inactive { background: var(--danger-subtle); color: var(--danger); }
.badge-provider {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: rgba(115,115,115,0.12);
  color: var(--text-secondary);
}
.badge-provider-google { background: rgba(66,133,244,0.12); color: #4285f4; }
.badge-provider-openai { background: rgba(16,163,127,0.12); color: #10a37f; }
.badge-provider-anthropic { background: rgba(204,130,72,0.12); color: #cc8248; }
.badge-provider-meta { background: rgba(59,130,246,0.12); color: #3b82f6; }
.badge-provider-mistral { background: rgba(255,119,0,0.12); color: #ff7700; }
.badge-provider-deepseek { background: rgba(99,102,241,0.12); color: #6366f1; }

/* ─── Key Display ───────────────────────────────── */
.key-display {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 14px 16px;
  border-radius: var(--radius);
  word-break: break-all;
  margin: 12px 0;
  color: var(--text-secondary);
}
.key-warning {
  color: var(--danger);
  font-size: 12px;
  margin-top: 4px;
  font-weight: 500;
}

/* ─── Modals ────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 480px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.2s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(8px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal h3 { margin-bottom: 24px; font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  font-size: 13px;
  color: var(--text-secondary);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ─── Toast ─────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  z-index: 300;
  font-size: 13px;
  font-weight: 500;
  animation: slideIn 0.25s ease;
  max-width: 400px;
  box-shadow: var(--shadow-md);
}
.toast.error { border-color: var(--danger); background: var(--danger-subtle); color: var(--danger); }
.toast.success { border-color: var(--success); background: var(--success-subtle); color: var(--success); }
@keyframes slideIn { from { transform: translateY(12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ─── Tabs ──────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.tab {
  padding: 12px 20px;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  font-weight: 500;
  font-size: 13px;
  transition: all var(--transition);
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.tab:hover { color: var(--text-secondary); }

/* ─── Endpoint Box ──────────────────────────────── */
.endpoint-box {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 8px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 12px;
}
.endpoint-box .method { color: var(--success); font-weight: 700; }
.endpoint-box .url { color: var(--accent); }

/* ─── Stats Grid ────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}
.stat-item {
  padding: 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.stat-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.stat-value {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat-value-sm {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ─── Progress Bar ──────────────────────────────── */
.progress-track {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  border-radius: 99px;
  transition: width 0.5s ease;
}

/* ─── Empty State ───────────────────────────────── */
.empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ─── Copy Button ───────────────────────────────── */
.copy-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  font-family: var(--font);
  transition: all var(--transition);
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ─── Responsive ────────────────────────────────── */
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .container { padding: 20px 16px; }
  .card { padding: 20px; }
  .navbar { padding: 0 16px; }
  .login-card { padding: 40px 24px; margin: 0 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}